/*
 * Open Source Physics software is free software as described near the bottom of this code file.
 *
 * For additional information and documentation on Open Source Physics please see:
 * <http://www.opensourcephysics.org/>
 */

package org.opensourcephysics.tools;

import java.beans.PropertyChangeEvent;
import java.util.*;

import org.opensourcephysics.display.DatasetManager;
import org.opensourcephysics.display.DataFunction;

/**
 * This is a FunctionPanel for DataFunctions.
 *
 * @author Douglas Brown
 */
public class DataFunctionPanel extends FunctionPanel {

  /**
   * Constructor with input data.
   *
   * @param input the input DatasetManager
   */
  public DataFunctionPanel(DatasetManager input) {
  	this(new DataFunctionEditor(input));
  }

  /**
   * Constructor with function editor.
   *
   * @param editor a DataFunctionEditor
   */
  public DataFunctionPanel(DataFunctionEditor editor) {
  	super(editor);
  	String name = editor.getData().getName();
  	setName(name.equals("")? "data": name); //$NON-NLS-1$ //$NON-NLS-2$
  }

  /**
   * Returns the DatasetManager.
   *
   * @return the DatasetManager
   */
  public DatasetManager getData() {
  	return ((DataFunctionEditor)functionEditor).getData();
  }

	/**
	 * Gets a label for the FunctionTool spinner.
	 * 
	 * @return a label string
	 */
	public String getLabel() {
		return ToolsRes.getString("DataFunctionPanel.SpinnerLabel"); //$NON-NLS-1$
	}

  /**
   * Listens for property changes "edit" and "function"
   *
   * @param e the event
   */
	public void propertyChange(PropertyChangeEvent e) {
 	  if (e.getPropertyName().equals("edit")) { //$NON-NLS-1$
	  	super.propertyChange(e);
 	  }
 	  else if (e.getPropertyName().equals("function")) { //$NON-NLS-1$
 	  	// function has been added or removed
 	  	if (e.getNewValue() != null) { // added
 	  		DataFunction f = (DataFunction)e.getNewValue();
 	  		getData().addDataset(f);
 	  	}
 	  	else if (e.getOldValue() != null) { // removed
 	  		DataFunction f = (DataFunction)e.getOldValue();
 	  		int i = getData().getDatasetIndex(f.getYColumnName());
 	  		getData().removeDataset(i);
 	  	}
   		refreshFunctions();
   	  refreshGUI();
      functionTool.firePropertyChange("function", null, null); //$NON-NLS-1$
 	  }
	}

  /**
	 * Refreshes the functions.
	 */
  protected void refreshFunctions() {
  	// put the parameter values into the data properties map
  	Map map = getData().getProperties(); 
  	map.clear();
  	Iterator it = paramEditor.getObjects().iterator();
  	while (it.hasNext()) {
  		Parameter p = (Parameter)it.next();
  		String name = p.getName();
  		double val = p.getValue();
      map.put(name, new Double(val)); 
  	}
  	// evaluate the functions 
    functionEditor.evaluateAll();
  }

}

/*
 * Open Source Physics software is free software; you can redistribute
 * it and/or modify it under the terms of the GNU General Public License (GPL) as
 * published by the Free Software Foundation; either version 2 of the License,
 * or(at your option) any later version.

 * Code that uses any portion of the code in the org.opensourcephysics package
 * or any subpackage (subdirectory) of this package must must also be be released
 * under the GNU GPL license.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307 USA
 * or view the license online at http://www.gnu.org/copyleft/gpl.html
 *
 * Copyright (c) 2007  The Open Source Physics project
 *                     http://www.opensourcephysics.org
 */
